CONFIG_MCUMGR_SMP_UART_MTU¶

UART SMP MTU

Type: int

Help¶

Maximum size of SMP frames sent and received over UART, in bytes.
This value must satisfy the following relation:
MCUMGR_SMP_UART_MTU <= MCUMGR_BUF_SIZE + 2

Direct dependencies¶

MCUMGR_SMP_UART && MCUMGR

(Includes any dependencies from ifs and menus.)

Default¶

256

Kconfig definition¶

At <Zephyr Subsystem>/mgmt/mcumgr/Kconfig:340

Included via Kconfig:8 → Kconfig.zephyr:44 → <Zephyr Subsystem>/Kconfig:35 → <Zephyr Subsystem>/mgmt/Kconfig:9

Menu path: (Top) → Sub Systems and OS Services → Device Management → mcumgr Support → UART mcumgr SMP transport

config MCUMGR_SMP_UART_MTU
    int "UART SMP MTU"
    default 256
    depends on MCUMGR_SMP_UART && MCUMGR
    help
      Maximum size of SMP frames sent and received over UART, in bytes.
      This value must satisfy the following relation:
      MCUMGR_SMP_UART_MTU <= MCUMGR_BUF_SIZE + 2

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)